During an Ask an Expert event in the Museum in Washington, DC, lunar module "drop rig" engineer Marv Rosenberg shared a photo from his time testing the landing craft. In this photo he and astronaut Michael Collins sit on the Lunar Module. The photograph is signed by Collins and fellow Apollo 11 astronaut Buzz Aldrin as well as Apollo 13 astronaut Jim Lovell who wrote, “Thank goodness for the Lunar Module."